The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 2017
Filed:
Dec. 17, 2015
SK Hynix Inc., Gyeonggi-do, KR;
Seung-Ho Lee, Gyeonggi-do, KR;
SK Hynix Inc., Gyeonggi-do, KR;
Abstract
A voltage level shifter includes: in stages a pull-down driving unit suitable for receiving an input signal swinging between a ground voltage and a first supply voltage, and pull-down driving an output node to the ground voltage according to a voltage level of the input signal, wherein an output signal outputted through the output node swings between the ground voltage level and a second supply voltage level higher than the first supply voltage; a pull-up driving unit suitable for pull-up driving the output node, to the second supply voltage according to the voltage level of the input signal; a bias generation unit suitable for generating a bias voltage fixed to a preset voltage level; and a bias operation unit coupled between the output node and the pull-down driving unit, and suitable for lowering a voltage level of the output node in stages based on the bias voltage to supply the lowered voltage to the pull-down driving unit when a pull-down operation is performed by the pull-down driving unit.